Improvement in drive-well tubes



,aient chimici.

D. s. KNIGHT, or AKRON, OH'1O.

Letters Pate'ntlNo. 98,073, dated December 21, 1869.

IMPROVEMENT IN DRIVErWELL TUBES.

The Schedule referred to in these `Letters Patent and making part of the same.

Mon- To all whom. it may concern Be it known that I, D. R. KNIGHT, of Akron, in the county of Summit, and State ot Ohio, have invented certain new and useful Improvements in Driving-Pump Tubing; and I do hereby declare that the parts in the point for penetrating the ground into which it is driv-l en, thereby saving the labor and expense of boring or digging for water, the same being an improvement of a former invention for which a patent was granted to me.

A, lig. 1, represents asheath, which is constructed of metal, and perforated with fine holes, as indicated at B.

Said sheath cncloses the well-tubing, consistingr of the shell C, iig. 2, the four opposite sides of which are pierced with a series of holes, D. i

From'the upper side of' each hole proceeds an 1nclined tapering groove, E, the purpose of which will presently be shown.

F, lig. 3, is a section oi' tubing, closely but loosely fitted in the shell C.

On each four sides of said tubey is sunk a recess or chamber, G, pierced with a series of' holes, (l, and which are connected to each other by oblique shallow grooves or channels, l), the purpose of which will hereinafter' be shown.

' The lower end of said tube is armed with a sharp rounded point, H, the diameter'ot' which being a little larger than that of the sheath, and also that oi' the collar l,'whereby the several. sect-ions of tubing are joined to cach other, thereby allowing the joints to follow with freedom. the point as it descends into the ground.

J is a slot, cut, as will be seen, in a spiral direction in the side ofthe tube. Into said slot is projected the end of a pin, penetrating the shell C, thereby connecting the tube and shell to each other.

The practical operation of this combination of tubes is as follows:

The holes D in the shell are closed by that part of the inner tube F left between the recesses referred to, when the two sections are in such relation to each other as shown in iig. 1. In this condition it is driven into the earth, a succession of lengths of pipes being added by means of' the collars l, into which it is ,screwed as fast as the descent of the lower .sections may require, uut-il the desired depth is obtained.

The closed holes'D are then brought in open relation to those in the recesses of the tube F, by liftingupward the shell, or by driving d'mvnward the tube by inserting a rodl therein of sufficient length to reach down to the point, the result of whichwill be either' to turn the shell, or the tube to which the point isatktached, by 'virtue of the pin alluded to moving in the spiral slot J, the length of said slot being just the length to bring the series of holes in each 'section in immediate and open relation to each other, thereby allowing the water to low into the tube from the outside, thence upward.

The inclined tapering grooves E prevent the dirt, sand, 83o., from lodging in the holes while the tubing is being driven down. Their slanting nature allows the dirt to slide upward away thereti-om, and thus prevent obstruction to the intlowing of the water.

The oblique grooves in the sides ofthe recesses connecting the 'holes a admitthe iniiowing of the water more freely, in the event of' the holes and recesses becoming charged or clogged with'dirt, which, in some kinds of soil, is a matter of frequent occurrence and no little trouble.

Not only are the holes liable to-become obstructed, but also the holes D, in the shell, to prevent which is the purpose of enclosing the two sections C and F in the sheath A, above described.

This sheath, as will be seen, is so constructed that while it fits closely to the shell, between the range of holes, as at the points c, 1ig.`4, it swells outwardly immediately over them, as seen at c, thereby leavinga space between the shell and sheath forthe accumulation of water.

This sheath, being made ol'a strong plate of metal', is of suticient strength to resist all the external pressure that may be brought to bear upon it, and, being perforated with fine holes, will keep back the dirt ii'oru the holes in the shell, and at the same time allowing free access of the water.

By this device the pump is kept free ofdirt, sand,

or other obstructions, thereby rendering it more eiicient and durable.

That I claim as my improvement, and desire t0`\` secure by Letters Patent, is

The perforated shield or sheath A, so constructed as to fit closely between the ranges ot holes D, asy shown in tig. 4, and to swell Outward immediately over said holes, as shown at'c, for the proteotionofthe holes from dirt, sand, &c., in the manner substantially as described, and for the purpose specified.

. D. 1t; KNIGHT.

Witnesses:

J. H. Bomunen, D. L. HUMPHREY. 

